American Heritage Dictionary
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Century Dictionary
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GNU Webster's 1913
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The resulting environmental effects on [[benthic]] life forms of the [[bathypelagic]],— Citizendium, the Citizens' Compendium - Recent changes [en]
Oceans Shallow ocean waters (euphotic zone) contain a greater concentration of organisms than the rest of the sea Phytoplankton (algae) is food not only for zooplankton (protozoans and microscopic animals) but also for small fishes Coral reefs - areas of biological abundance just below the surface in shallow, warm, tropical waters Chief constituents are stony corals, animals that have a calcium carbonate (limestone) exoskeleton, and calcareous red and green algae Most of the ocean lies within the pelagic zone Epipelagic zone lacks the inorganic nutrients of shallow waters, and therefore it does not have as high a concentration of phytoplankton Animals in the deeper waters of the mesopelagic zone are carnivores, which are adapted to the absence of light, Waters of the bathypelagic zone are in complete darkness except for an occasional flash of bioluminescent light Abyssal plain - many invertebrates survive there by feeding on debris floating down from the mesopelagic zone— Recently Uploaded Slideshows

Century Dictionary (1)
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